Choir.io is down?

Now, @daghoidahl tweeted @alexdong and got an answer: https://twitter.com/alexdong/status/587768379840208896

Several sources (https://twitter.com/DingoEatingFuzz/status/58405904110354841..., https://twitter.com/inpheaux/status/584034408623026176, https://twitter.com/cidoum/status/583527276320583680) indicate that choir.io has been down for days. Anyone knows anything about this situation?